code: def test_augmenter_n_output(self):
      n = 3
      for aug in self.audio_augs:
          augmented_audios = aug.augment(self.audio, n=n)
          self.assertEqual(len(augmented_audios), n)
          for augmented_audio in augmented_audios:
              self.assertFalse(
                  np.array_equal(augmented_audio, self.audio)
              )
  
      data = [self.audio, self.audio, self.audio]
      for aug in self.audio_augs:
          augmented_audios = aug.augment(data, n=1)
          self.assertEqual(len(augmented_audios), len(data))
          for d, augmented_audio in zip(data, augmented_audios):
              self.assertFalse(np.array_equal(augmented_audio, d))
  
file_path: nlpaug/test/augmenter/test_audio_augmenter.py
imports: import unittest
  import os
  import numpy
  from dotenv import load_dotenv
  import nlpaug.augmenter.audio
  from nlpaug.util.audio import AudioLoader
label_desc: Use image node_id 2 for calling the TestAudioAugmenter obj's underlying member method code with example usage: obj.test_augmenter_n_output() without return types